TABLE 5.

Multivariate Cox proportional hazard model for survival

Characteristic	DMFS			OS
	HR	95% CI	P-value	HR	95% CI	P-value
Mastectomy vs. BCT	1.32	1.1 to 1.59	0.003	1.22	1.02 to 1.47	0.032
Age: >50 vs. ≤ 50	0.74	0.61 to 0.89	0.001	0.93	0.77 to 1.11	0.40
Tumor size: T2–4 vs. T1	1.63	1.35 to 1.97	<0.0001	1.66	1.38 to 2.01	<0.0001
Lymph nodes: N1–3 vs. N0	1.44	1.19 to 1.75	0.0002	1.45	1.20 to 1.77	0.0002
Grade: III vs. I/II	1.25	0.95 to 1.66	0.11	1.36	1.03 to 1.80	0.031
LVI: positive vs. negative/unknown	1.62	1.35 to 1.94	<0.0001	1.56	1.30 to 1.87	<0.0001
Resection margin: close/positive vs. free	1.49	1.12 to 1.98	0.006	1.29	0.96 to 1.73	0.09
Adjuvant chemotherapy: anthracycline or taxane vs. anthracycline + taxane	0.90	0.74 to 1.09	0.29	0.90	0.74 to 1.10	0.30
Adjuvant chemotherapy: other vs. anthracycline + taxane	1.68	1.29 to 2.19	0.0001	1.40	1.06 to 1.84	0.017